Finding the Fourth Proportional to 105,895.20, 158,583.60 and 50,426.40

Step by Step Solution

1. Step 1: Write the proportion equation
   105,895.20 : 158,583.60 = 50,426.40 : x
2. Step 2: Convert to fraction form
   105,895.20/158,583.60 = 50,426.40/x
3. Step 3: Cross multiply
   105,895.20x = 158,583.60 × 50,426.40
4. Step 4: Simplify right side
   105,895.20x = 7,996,800,047.04
5. Step 5: Solve for x
   x = 7,996,800,047.04/105,895.20
6. Step 6: Final answer
   x = 75,516.17